Efficient Reversible Entanglement Transfer Between Light and Cold-Atoms Quantum Memories
November 8th, 2021 FELIX HOFFET CNRS

Reversible entanglement transfer between light and matter is a crucial requisite for the ongoing developments of quantum information technologies. Quantum networks and their envisioned applications rely on entanglement distribution between nodes. A current roadblock is the limited efficiency of this process that compromises the scalability of quantum-repeaters architectures. In this seminar I will present the efficient storage of heralded single-photon entanglement into and out of two quantum memories based on large ensembles of cold cesium atoms. I will focus on the description of experimental techniques that lead to this achievement and also detail how we can prepare our cold atomic-ensemble to obtain high values of optical-depth. On the other hand, I will present the critical conditions that are required to obtain highly efficient memories in the context of cold-atoms and show that we fulfill all of them.

Monday, November 8, 2021, 12:00. Seminar Room

Hosted by Prof Hugues de Riedmatten